diff --git a/MANIFEST.in b/MANIFEST.in
index 275cbc44..de24fc64 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -4,7 +4,7 @@ include README.md
 include setup.py
 include hplib\hplib_database.csv
 include hplib\hplib.py
-
+include hplib\same_built_type.pkl
 
 global-exclude __pycache__
 global-exclude *.pyc